package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
public class SetmealServiceImpl implements SetmealService {
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    /**
     * 新增套餐
     *
     * @param setmealDTO
     */
    @Override
    @Transactional
    public void save(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmealMapper.save(setmeal);
        Long setmealId = setmeal.getId();
        List<SetmealDish>  setmealDishes = setmealDTO.getSetmealDishes();
        if (setmealDishes !=null &&setmealDishes.size()>0){
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(setmealId);
            });
        }
        setmealDishMapper.insertBatch(setmealDishes);
    }

    /**
     * 套餐分页查询
     * @param setmealPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(),setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);
        return new PageResult(page.getTotal(),page);
    }

    /**
     * 根据id查询套餐
     * @param id
     * @return
     */

    @Override
    public SetmealVO getById(Long id) {
       Setmeal setmeal = setmealMapper.getById(id);
       List<SetmealDish>  setmealDishs = setmealDishMapper.getBySetmealId(id);
        SetmealVO setmealVO = new SetmealVO();
        BeanUtils.copyProperties(setmeal,setmealVO);
        setmealVO.setSetmealDishes(setmealDishs);
        return setmealVO;
    }

    /**
     * 修改套餐
     * @param setmealDTO
     */
    @Override
    @Transactional
    public void update(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmealMapper.update(setmeal);
        setmealDishMapper.deleteBySetmealId(setmeal.getId());
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if (setmealDishes!=null &&setmealDishes.size()>0){
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(setmealDTO.getId());
            });
        }
        setmealDishMapper.insertBatch(setmealDishes);
    }

    /**
     * 套餐的批量删除
     * @param ids
     */
    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {
        Integer setmealNum = setmealMapper.countById(ids);
        if (setmealNum>0){
            throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
        }
        //根据套餐ID批量删除套餐数据
        setmealMapper.deleteByIds(ids);

        //根据套餐ID 批量删除套餐对应菜品数据
        setmealDishMapper.deleteByDishIds(ids);
    }

    /**
     * 起售停售套餐
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, long id) {
       Setmeal setmeal =  Setmeal.builder().status(status).id(id).build();
       setmealMapper.update(setmeal);
    }
    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }
    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}

